/**
  * Get the configured Solr options with the defaults all merged in
  * @return array - The merged options
  */
 static function solr_options()
 {
     if (self::$merged_solr_options) {
         return self::$merged_solr_options;
     }
     $defaults = array('host' => 'localhost', 'port' => 8983, 'path' => '/solr', 'version' => '4');
     // Build some by-version defaults
     $version = isset(self::$solr_options['version']) ? self::$solr_options['version'] : $defaults['version'];
     if (version_compare($version, '4', '>=')) {
         $versionDefaults = array('service' => 'Solr4Service', 'extraspath' => Director::baseFolder() . '/fulltextsearch/conf/solr/4/extras/', 'templatespath' => Director::baseFolder() . '/fulltextsearch/conf/solr/4/templates/');
     } else {
         $versionDefaults = array('service' => 'Solr3Service', 'extraspath' => Director::baseFolder() . '/fulltextsearch/conf/solr/3/extras/', 'templatespath' => Director::baseFolder() . '/fulltextsearch/conf/solr/3/templates/');
     }
     return self::$merged_solr_options = array_merge($defaults, $versionDefaults, self::$solr_options);
 }